Beomaster 8000 Project

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Here is the Beomaster 8000 that I acquired as part of an 8000 system earlier this year. I have been wanting to get this receiver working again but kept getting side-tracked. I think it is now time to dive into it. I have the service manual so I think I am set.

I came across another Beomaster 8000 unit with the undocumented auxiliary connector. So I will post the question again asking if anyone knows what this connector was for and what the history is behind it?

The Beomaster 8000 cabinet already has a place for this optional connector but I have not found any documentation about it in either the user manual or service manual.

All of the units that have the connector (I have run into four now) look like the connector was added after the Beomaster left the factory. A splice is performed on the Preamp PCB P17 connector to get -15 VDC and Ground for the auxiliary connector.

Here is the auxiliary connector from the inside and the outside of the Beomaster 8000.

Did some units come from the factory with the connector or was it something that was in the original design, then scrapped...then added back in as a mod?

Thanks for the information. The Beo4 came about much later than the Beomaster 8000 so I don't think the port was intended for that purpose although it could have been made to do so. After talking to some other Beomaster 8000 owners I am leaning towards the port being using as a on/off trigger to some other component that users wanted to use with their Beosystem 8000. The Beomaster remote could then switch everything on and off.

Hopefully an owner that used the functionality will find this post and supply a definitive answer.

From the information you referenced it makes sense that is what the -15V power connector is for. Unfortunately none of the image links on the old forum site work anymore. However, the link to the Master Control Link manual still works.

So it sounds like the Beomaster 8000 provides switched power to this remote control IR converter box that allows a newer B&O remote control to work with the Beomaster 8000. The -15V power from the Beomaster 8000 was just a convenience over using a separate power transformer (wall wart) for the converter box.

This year I updated the 7 segment displays on my Beocord 9000 and Beomaster 8000 inbetween projects for other Beosystem 8000 owners. In addition I changed out the artwork I had on the wall with my Beosystem. I kind of like the new look. The 1980 Bang & Olufsen design still goes great with art from 2019.

I like it ... except for one stray speaker wire I should have tucked away in the SC80 cabinet.

Updated my Beosystem 8000 This year I updated the 7 segment displays on my Beocord 9000 and Beomaster 8000 inbetween projects for other Beosystem 8000 owners. In addition I changed out the artwork I had on the wall with my Beosystem. I kind of like the new look. The 1980 Bang & Olufsen design still goes great with art from 2019. I like it ... except for one stray speaker wire I should have tucked away in the SC80 cabinet. -sonavor